Thursday, 2 October 2014

A Paradox

There is a cat in a box. Also in the box is a radioactive atom, which, if it decays within a certain interval, will trigger a time machine that sends the cat back in time to kill its own grandfather while he was still a kitten. (Why the cat has such an irrational hatred of its grandfather I don't know. I never said it was a nice cat.)

Unless you open the lid, there is no way of knowing whether there has ever been a cat in the box at all.

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